- AXIS: - 29 to + 100; - Normal QRS axis if R > S in both I and aVF; - Transition Zone: Between V3 - V4; - S wave > 5 mm in V1; - Short and Fat patients: more Leftward; - Tall and Thin: more Verticle to Rightward; - Pediatrics: Larger S wave in Chest Leads; * DURATION: Adults: usually < 0.08 sec; - 0.09 - 0.11 sec: Slight Intra Vent Conduction Delay; - Look for other EKG abnormalities; - Consider
LVH,
HyperK,
quinidine,
Procainamide; - Left Anterior Hemi Block - Greater than 0.12 sec: Consider Bundle Branch Block; * Poor R Wave Progression: - COPD -
LVH (w/ Post Hypertrophy) -
Ant MI;
